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-rw-r--r--compiler-rt/lib/builtins/popcountdi2.c34
1 files changed, 17 insertions, 17 deletions
diff --git a/compiler-rt/lib/builtins/popcountdi2.c b/compiler-rt/lib/builtins/popcountdi2.c
index 09eeb9e9925..90c9fe714f6 100644
--- a/compiler-rt/lib/builtins/popcountdi2.c
+++ b/compiler-rt/lib/builtins/popcountdi2.c
@@ -15,21 +15,21 @@
/* Returns: count of 1 bits */
-COMPILER_RT_ABI si_int
-__popcountdi2(di_int a)
-{
- du_int x2 = (du_int)a;
- x2 = x2 - ((x2 >> 1) & 0x5555555555555555uLL);
- /* Every 2 bits holds the sum of every pair of bits (32) */
- x2 = ((x2 >> 2) & 0x3333333333333333uLL) + (x2 & 0x3333333333333333uLL);
- /* Every 4 bits holds the sum of every 4-set of bits (3 significant bits) (16) */
- x2 = (x2 + (x2 >> 4)) & 0x0F0F0F0F0F0F0F0FuLL;
- /* Every 8 bits holds the sum of every 8-set of bits (4 significant bits) (8) */
- su_int x = (su_int)(x2 + (x2 >> 32));
- /* The lower 32 bits hold four 16 bit sums (5 significant bits). */
- /* Upper 32 bits are garbage */
- x = x + (x >> 16);
- /* The lower 16 bits hold two 32 bit sums (6 significant bits). */
- /* Upper 16 bits are garbage */
- return (x + (x >> 8)) & 0x0000007F; /* (7 significant bits) */
+COMPILER_RT_ABI si_int __popcountdi2(di_int a) {
+ du_int x2 = (du_int)a;
+ x2 = x2 - ((x2 >> 1) & 0x5555555555555555uLL);
+ /* Every 2 bits holds the sum of every pair of bits (32) */
+ x2 = ((x2 >> 2) & 0x3333333333333333uLL) + (x2 & 0x3333333333333333uLL);
+ /* Every 4 bits holds the sum of every 4-set of bits (3 significant bits) (16)
+ */
+ x2 = (x2 + (x2 >> 4)) & 0x0F0F0F0F0F0F0F0FuLL;
+ /* Every 8 bits holds the sum of every 8-set of bits (4 significant bits) (8)
+ */
+ su_int x = (su_int)(x2 + (x2 >> 32));
+ /* The lower 32 bits hold four 16 bit sums (5 significant bits). */
+ /* Upper 32 bits are garbage */
+ x = x + (x >> 16);
+ /* The lower 16 bits hold two 32 bit sums (6 significant bits). */
+ /* Upper 16 bits are garbage */
+ return (x + (x >> 8)) & 0x0000007F; /* (7 significant bits) */
}
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